Was lucky enough to have Mark Beasley when doing my IR there last year. Absolutely TOP NOTCH... his shoes are now filled by Trevor, who has the patience of God himself, and Lance who won't let you get away with anything. Also instructing there (I think) are Steve Davies, a softly spoken wise chap- also top notch.
As for groundschool- did ATPL stuff there Sept 03-Apr 04. First time passes in all subjects, average 94%. Need I say more?